Triple-purification water-still.



' J. A. POWER. TRIPLE PURIFIGATVION WATER STILL.

APPLICATION FILED APB. 21, 1910.

Patented A111211, 1911.

gasgeel ATTORNEYS UNITED srapasginnr OFFICE.

i JOHN A. POWER, F BABYLON', NEW YORK.

TRIPI '.S-PURIFICATON WATER-STILL.

To al?, uxzom it may concern:

Be it known that LJonx A. lowmna citizen of the United States. andresident of Babylon. in the county of Suffolk and State of New York,have' invented a new and im proved 'Iriple-Purification 'ater-Still, ofwhich the following is a full, clear, and exryact description.

The invention relates to multiplo condenser water stills, such, forinstance. as shown and described in the Letters Patent of the UnitedStates. No. 878,744, granted to me Februari' 1l, 190?.

The object of the inventionis to provide a new and improved triplepurification water stlll, arranged to insure a continuous opera.

.tion and to subject the water to distinct. x. purification processes,with a view to elimmate volatile gases, sediment and other ex- 2traneousmatter, at the same time acrating the 'atei' to produce a pure,delicious and palatable water a comparatively low cost.

For the purpose mentioned. use is made ot an evaporator and an airheating chamber having an air inlet and an air outlet, and means forproducing a suction action in the said air heating chamber by the vaporsarising from the said evaporator. to cause the *heated air to connninglewith the said vapors 3G't0-insure a thorough aeration of the vapors andconsequently of the water of condensaiion.

A practical embodiment of thc invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in bothviews.

Figure 1 is a sectional side elevation of the water still. part being inelevation; and 4a Fig. 2 is an enlarged sectional side elevation of partof the same.

ln the general construction of the water still. use is made of anevaporator A. a dis` tilled water reservoir B, an air-heating and 4sierilizingchaniber C interposed between the top of said evaporator Aand the bottom of the said reservoir B, and on the top of the latter isarranged a condenser D having a shell IY, and condenser tubes D2 securedin the, bottom of the shell D and opening at.

their lower ends into the distilled water reservoir B, so that the waterof condensation within the lsaid tubes D2 flows down the same and intothe reservoir B, from which it is Specification of Letters ?atent.

Application led April 21, 1910. Sex-iat No. 556.684.

the next run.

drawn otf through a valwd pipe E.- The Patented Apr. 4` 1911.

upper open ends ofthe tubes I)2 terminate immediately below the top ofthe shell D', and iu the upper portion ofthe shell 1) are arranged esmpepipes Dft for the escape of volatile gases duo to the presence oforganic matter in the water. and in thevtop of the shell 1)' arearranged openings D, for car [ving oti` exiraneous'v: mrs passingthrough the upper open ends o the tubes D2.

Raw water is supplied to the condenscr D at the lower portion of itsshell D by the use of a valved pipo l" connected with a suit-' ablesource of water supply. and from the 'upper portion of the shell 1)'.avdistancc below the upper open ends of the tubes D'', extends anoverflow pipe G. leading downwardly and serving to maintain the level ofthe water in the condenser .shell Il a distance below the upper ends ofthe condenser. tubes l)a and the escape pipes D. as plainly indicatoriin Fig. 1. k The pipe (l has a branch pipe (,i leading to a .sewer orother suitable place of discharge. and the terminal G2 of the pipe (idischargcsini'o a water tank li arranged alongside t he evaporator A andconnected with the .sannncar the bottom by a pipe ll' to suppl)r theevaporator A with water, and to maintain the levi-l of the water in theevaporator correspomling to the top of the :ank ll. whicilatteroverflows into the ovcrtlow tank i. connected atv .its bottom by a pipi`I2 with a pipe J. con- -pipe .l serves as a drain pipe for the trank Iand also as a blow-out pipc for any sediment settling m the evaporatorit being unv dcrrtnod that for this purpose the valve J' is opened, sayaftci' a day's use of the still, to drain the evaporator .5. of itswater and the scdinwnt settling in the bottoni thereof. A' fter this isdone. the valve J is closed and the cvnpru-at or A is retillcd withwater from the tank il atA the time the stili is started at In order toheat the water in the evapoV rator A, use. is preferably made of a steamcoil K. connected with a boiler or other suit' submerged in the watercontained in tiief rhaniber C. and the upper ends of the pipes CTI ' therondeuser tubes D2.

maporator il. The. vapors arisingfrom the heated water 'contained in theevaporator pass through pipes L extending from the iop et the evaporate"and passing into pipes N rising from the bottoni ot' the distilled waterreservoir B, the pipes N opening; :it their 'lower ends into theair-heating l.l and extend into the lovferalor lons of Sullieient spaceis left between the pipes L and for the lst-:uml air i`n the chamber Cto pass through the `:aid space into the corresponding con deu-r tubeD2, it being understood that vapois passing through the pipes L causensueiion in the pipes N, thus drawing the heated air outJ of the chamberCinto the Fishes D2 to oomxningle with the vapors pa ing into the tubesD2 by the pipes larh pipe N is spaced from its tube D2 sufieien to allowthe water of condensation on the innersuraee of the tube D2 to flow.downward into the reservoir B to ileet herein. The air-heating chamberC is provided with inlet pipes C', preferably eovered with wire netting(see Fig. 2), to prevent impurities rom passing with the air wir: thochamber C. Now as'the chamber i. intermediate the evaporator A and thereservoir B, if'- is evident that .the air pass` ing: into the chamber Cfrom the'outsid'e is highly heated and sterilized and is forced throughthe pipes N to comming-le with perature as the heated air. Thus' thevapore are thoroughly aerated and muse qnontly the Water of condensationtio-wing down the tol es D2 into thereservoir B. I,

When the still is in use, raw water nassng into the condenser D reachesgi tally the temperature of about 9,00" F. om to the heit Aradiated fromthe tubes-D1', the temperature mentioned hein attained. at: or near thelevel of the water in the heil D',

at which point the Water overtows into the '.rato;` settles therein, tohe drawn 5 periodically through the pipe J, and-any ex traneoas mattercontained in the' Yapos passing up through the tubes D2 can readily passout of the same into the top of the condenser shell D'and out throughthe escape openings D4. 'lhe condenser shell Ti' may he flushed at theend of a days run by openthe' ".apors having approximately the sameteming,Y a valved connection O connecting the` loiver end of the shell Dwith the ipe G, it boing understood that when this ushing ltakes placethe valve J is also opened to finish the evaporator A.

The water still shown and described is very simple and can be cheaplyconstructed, and a great saving' of heat units is effected by utilizingthe vaporsin the tubes D2 for heating the iucoiuiuler ra\v water anddeliv ering this heated water to theevaporator A, so that it requiresbut little heat from the coil K to cause the water to boil in theevaporator. It will also be noticed that by arranging the air-heatingchamber 'C immediately above the. evaporator A, the said chamber ishighly heated, to properly heat and sterilize the ai;` drawn into thetubes D? by the suction action of the vapors passing from the evaporator.l by way of the pipes L into the tubes D2.

:Itis understood that when the still is in use, the raw water flowscontinually into the eondenser shell D', to be heated therein by theheat radiatingr from the condenser tubes D2, the vheated Wateroverflowing finally by Way of the pipe G, while the volatile gasesliberated within the shell D escape by way of the escape pipes D. A portion of the Water passing down the pipe Gv is drained oil by the branchpipe G', and the remainder passes into the tank H, 'which supplies theevaporator A with water,A to' maintain a constant level of the water 'inthe evaporator, as before explained. The vapors of the now boiling vaterin the evaporator pass through the pipes L into the condenser tuhes D:to heat the same and at the sanno time produce. a suction action in theainheatingr and sterilizing chamber C, to draw air from the outside intothe said chamber, in which latter the air iS heated and draivn up thepipes N into the condenser tuhes D2 toconuningle .with the vapors andthus aerat'e the sante. 4It is understood that by heating' the air`theatiinity oi the air to eonuningle with the vapors is greatlyincreased, and hence a thorougl aeration taires place. The aeratedvapors efmdensirig! inV the tubes D2 How down the latter into thedistilled wat-er reservoir B, from whieh the Water is withdrawn asrequired.' 'Sedinafnt' in the Water is preeipit: 'ed in the evaporatorA, and extraneous matter in the rising' vapors in the condon-letubes tanreadily escape by way of tlnscape openings D. Y Front the foregoing, itwill he seen that the oms-ration is continuous `and a 'largo quantity ofaerated distilled water is prodnee' at a correspondingly low cost. y

Incase it is desired not to aerate the Wat'er'or other liquid, then capsare placed over the air. inlets C', thus preventing air from passinginto the chamber.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

' 1. A water still, comprising an evaporator having vapor outlets, anair heating chalutier located above the evaporator and having an airinlet and heated air outlets extending from the top of slid chamber, anda condenser' having condeiser tubes, an air outlet and a vapor outletextending into each condenser tube, the vapor outlets heing arrangedrelatively to the air outlets for producing a suction action in the saidair heating chamber b v the vapors arising from the said evaporator' andcommingling the heated air with the vapors.4

2. A water still, comprising an eva-porator having; vapor outlets forthe passage of the vapors generated in the said evaporator, a distilledwater reservoir, an air heating chamber interposed between the top ofthe said evaporator and the bottom of said reservoir, the said airheating: chamber having an air inlet and heated air outlets, and acondenser having condenser tubes opening into the said reservoir. anairkoutlet and a vapor outlet extending into each of s:i id condensertubes.

3. A water still, comprising an evaporator provided with vapor outletpipes at its top, a distilled water reservoir, an air-heating chamberinterposed between the evaporator and the reservoir and having an airinlet, and air outlet pipes extending from the top of said air chamber,the heated air outlet pipes and the vapor outlet pipes exteiidingthrough the said reservoir,l the said vapor outlet pipes also extendingthrough the air heating: chamber and through the.

renter, oi' said air outlet. pipes. andvspaced therefrom to prt'xtuce asuction action in the said air heating chamber, and a condenser having ashell and condenser tubes, the said condenser tubes opening at their'lower endc into the said reservoir, the upper ends of the said airoutlet pipes and vapor outlet pipes extending into the lower ends of thesaid condenser tubes, the air outlet pipes being spaced from the wallsof the condenser tubes.

4. A water still, eoii1psi1ig an evaporator having vapor outlets for thepassage of the vapors generated in the said evaporator, a distilledwater reservoir, an air-heating chamber interposed between the saidevaporator and the said reservoir, the said airbeating chamber having anair inlet and heated air outlets openingVv into the said evaporatoroutlets for the latter to produce a suction act-ion in the saidair-heating chamber, the said vapor outlets and the said heated airvoutlets extending through the said reservoir, and a condensersuperimposed on` the said reservoir and having a condenser shell andcondenser tubes opening; at, their lower ends into the said reservoir,the said vapor outlets and the said heated air outlets extending intothe lower ends of the said condenser tubes.

5, A 'water still, eomprising an evaporator having vapor outlets for thepassage of the vapors generated in the said evaporator, a distilledwaterreservoir, anniv-heating chamber interposed between the saidevaporator and the said reservoir, the said airheating chamber having anair inlet and heated air outlets opening into the said evaporatoroutlets for the latter to produce a suction action in the saidair-heating chamber, the said vapor outlets and the said heated airoutlets extending through the said reservoir, and a condensersuperimposed on the said reservoir and having a condenser shell andcondenser tubes open-l ingat their lower ends into the said reservoir,the said vapor outlets and the said heated air outlets extending intothe lower ends of the said condenser tubes, the said condenser tubesterminating with' their upper open ends belowA the top of the oondensershell and the upper end of the latter being provided with outlets forextraneous vapors rising from the water in the condenser' shell andthose rising in the condenser tubes.

ln testimony whereof l have signed my name to this speeiiicatiou in thepresence of two subscribing witnesses.

JOHN A. POWER. Witnesses Trino. G. Hos'rizu, Pnimr D. Romanos.

